Best air purifiers for 250 sq ft and allergies

Target smoke CADR 134 using 4 ACH and an 8 ft ceiling. Results come from AHAM Verifide CADR rows; CARB matches are marked when found.

Required smoke CADR = sqft x ceiling height x ACH / 60
250 x 8 x 4 / 60 = 134
AHAM 2/3 room-size cross-check: CADR >= 167

Model	Smoke CADR	AHAM room	CARB	Cost/CADR	Annual filter
LEVOIT LAP-C601S-WUSR 260 CADR above target	394	611 sq ft	Check CARB	$0.76	$59.99	Check price
LEVOIT LAP-C601S-AUS 257 CADR above target	391	606 sq ft	Check CARB	$0.77	$59.99	Check price
LEVOIT LAP-C601S-WCA 257 CADR above target	391	606 sq ft	Check CARB	$0.77	$59.99	Check price
LEVOIT LAP-C601S-WUS 257 CADR above target	391	606 sq ft	Check CARB	$0.77	$59.99	Check price
Blueair Blue Signature 321 CADR above target	455	705 sq ft	Matched	$0.99	N/A	Check price
Medify Air MA-112 Pro 466 CADR above target	600	930 sq ft	Check CARB	$0.99	N/A	Check price
Medify Air MA-112 460 CADR above target	594	921 sq ft	Check CARB	$1.00	N/A	Check price
LEVOIT LAP-EL551S-AUS 220 CADR above target	354	549 sq ft	Check CARB	$1.41	N/A	Check price
LEVOIT LAP-EL551S-AUSR 220 CADR above target	354	549 sq ft	Check CARB	$1.41	N/A	Check price
LEVOIT LAP-EL551S-WUSB 220 CADR above target	354	549 sq ft	Check CARB	$1.41	N/A	Check price
LEVOIT LAP-P501S-WUSR 14 CADR above target	148	229 sq ft	Matched	N/A	N/A	Check price
WOZOYO Pure Air PA12 229 CADR above target	363	563 sq ft	Matched	N/A	N/A	Check price
WOZOYO Pure Air PA6 229 CADR above target	363	563 sq ft	Matched	N/A	N/A	Check price
Airhub A280 1 CADR above target	135	209 sq ft	Check CARB	N/A	N/A	Check price
Airhub A280N 1 CADR above target	135	209 sq ft	Check CARB	N/A	N/A	Check price
Airhub A281 1 CADR above target	135	209 sq ft	Check CARB	N/A	N/A	Check price
Airhub A281N 1 CADR above target	135	209 sq ft	Check CARB	N/A	N/A	Check price
Airhub A282 1 CADR above target	135	209 sq ft	Check CARB	N/A	N/A	Check price
Airhub A282N 1 CADR above target	135	209 sq ft	Check CARB	N/A	N/A	Check price
Danby DAP143BAB-UV 1 CADR above target	135	222 sq ft	Check CARB	N/A	N/A	Check price
Danby DAP143BAW-UV 1 CADR above target	135	222 sq ft	Check CARB	N/A	N/A	Check price
Jafanda JF280 1 CADR above target	135	209 sq ft	Check CARB	N/A	N/A	Check price
Jafanda JF280N 1 CADR above target	135	209 sq ft	Check CARB	N/A	N/A	Check price
Jafanda JF281 1 CADR above target	135	209 sq ft	Check CARB	N/A	N/A	Check price
Jafanda JF281N 1 CADR above target	135	209 sq ft	Check CARB	N/A	N/A	Check price